I've found with aircraft with 4 blades or more you usually have to land with the power on and quite a bit of power. If you pulled the power back to FI you will fall out of the sky as those big blades start to disc. I've found when training with guys on one of these types you have to be careful they don't pull the power off too soon or it can quickly get away from you. With aircraft with 3 blades such as Cheyennes and older B200's you can get away with pulling the power back to idle at around 30' and flying them on.